Paste-applying mechanism for fabric-slitting machines.



AARONYFREYDBERG, or New YORK, N. Y.

Specification of Letters Patent.

Patented uly 9, 1918.

Application filed Septemberl, 1917. Serial No. 191,199.

To all whom t may concern.'

Be it known that I, AARON FREYDBERG, a citizen of the United States, residing at New York, in thecounty of New York and` State of New-York, have invented new and useful Improvements in Paste-Applying Mechanism for Fabric-slitting Machines, of which the following is a specication.

This invention relates to mechanism for applying paste or adhesive to the edges of strips of fabric as the latter are cutfrom a bolt or roll of material vby means of a fabric slitting machine.

At the present time, in making ribbons, bands, tapes and the like, it is the practice to resort to the use of a slitting machine embodying a plurality organg of cutters, usually in the form of spaced disks, which divide or sever`- the 'relatively wide fabric web into relatively narrow' strips as such 'web is'drawn off from an unwinding roll and wound on a' take-up roll. But it has been found that the severing and loosening of the threads, strands or fibers, which constitutethe marginal edges of the strips, will ultimately result in the unraveling and fraying of these edges, thus impairing the value of the product, and in some instances spoiling the same to such a degree as to detract from its salability.

To obviate this disadvantage I have devised a mechanism for use in conjunction with the slitting machine'and through the agency of which mechanism a paste or adhesive may be applied toi the edges of the fabric strips during the cutting operation, thus effectively uniting and sealing the loose or severed ends of the threads or strands lying at the edges of the strips, and consequently preventing the subsequent unraveling or fraying of these edges.

Another object of the invention is the provision of a pasting mechanism embracing a plurality of pasting elements for operation inconjunction with a gang of fabric cutters, these elements being constructed and arranged independently of each other, so that each may be assembled and dismounted or shifted and adjusted to suit specific conditions of work irrespective of its companion elements.

It is also my purpose to provide a pasting mechanism of this character which will embody the desired features of simplicity, elliciency and accuracy, and which may be manufactured, installed and operated with but little expense.

With the above recited objects and others of a simllar nature in view my inventionI consists in the construction, combination and arrangement of parts set forth in and falling within the scope of Vthe appended i claims.. In the accompanying drawing: Figure 1 is a view, partly in and partly-in section, and showing my invention in conjunction with so muchof a fabric slitting machine as is necessary'-- for a clear understanding of its purpose.

Fig. 2 is a perspective view of my pasting mechanism, only one member of the gang. of paste applying disks being shown.

Fig. 3 is a detail view in vertical section of a wall of the pastev tank showing one of the adjustable shoes thereon.

Fig. 4 is a sectional view taken through one of the pasting disks.

Fig. 5 is a ldetail perspective view of a section of a fabric strip cut on the machine.

Fig. 6 is a detail sectional view showing the operating of cutting the strip from the fabric web.

Fig. 7 is an enlarged detail view of a modified form of pastek applying mechanism. A

Referring now to the accompanying drawing in detail the letter A indicates the unwinding or feed roll from which the fabric web B passes to the cutter roll C where it is slit into strips, as hereinafter described, and is then wound on the take-up or rewinding roll D.

This take-up or rewinding roll D may be considered as forming the drive shaft of the mechanism shown i'n Fig. l, and such take-up roll is driven in any suitable and well known manner, or by any well known form of power mechanism. As it rotates, it draws the web oif the roll A and over the cutter roll C, which latter also revolves in the manner of an ordinary idler roll. The frictional contact of the cutter roll C and the traveling web B against the periphery of the cutting disks 1 will cause the vlatter to turn, and as these cutting disks 1 also frictionally contact with the paste a -plying disks or wheels 16, the latter will e also i indicated by the arrows in Fig. 1. The v slitting of the web, at the cutter roll C, 1s

accomplished by means of a 'gang of cutting disks, suchas are shown 'a't 1, each cutting disk being mounted as at 2 at the forward end of a vtilting bar 3, pivotally mounted at 4 in the bearing block 5, which in turn may be adjusted longitudinally of the sup-v porting bar 6'by means ofthe 4set screw 7, as will be readily understood by reference to. Fig. 1. The rear end of each'tilting bar 3'is provided with a leaf spring. 8 against which bears the adjustable tension screw 9 carried by the bracket 10., this arrangement of course being for the purpose of applying the requisite tension to' the tilting bar 3 to holdits cutter disk in proper relation to the y, cutter roll C and the web to be slit.

. ing element, and these 65.

disk or wheel 16. At one end of of the wall 12, the

`against the wall 12 As each cutter disk revolves in the cutting operation it `is my purpose to apply a thin line of paste to the peripheralcuttmg edge thereof, and this I accomplish through'the pasting mechanism which is indicated as an entirety by the letter E. As will be best und derstood by reference to Figs. 1 and 2, thispasting mechanism comprises an elongated paste-holding tank 11, in which the paste P is placed. This tank is formed with a rela 'tively high, longitudinally extending-'wall 12, the top edge of which is provided with a rounded bead 13. This beaded wall 1s adaptedy to act as a support and fulcrum for the paste-applying elements,'which correspond in number to the number ofcutters employed on the machine. Each pasteapplying element or member includes, lin the present instance, a rocking bar 14, slotted as at 15 for the reception of the paste-applying' this slot is a dependingv arm 17 carrying a curved paste-scraping blade 18, whichis preferably in the nature of 4a small leaf spring of brass or other suitable metal, and is intended to have itsfree end lie in juxtaposition. to the paste-applying disk to scrape or remove any surplus4 paste therefrom. Approximately midway itslength each bar 14 is provided positioning shoe 20 is in the form of a small diskislotted as at 22 toslide on the bead 13 disk or shoe having a spring tongue 23 the free end of which bears the shoe inthe position in which it has been set. Ofcourse there is a shoe for each pastshoes may be shifted or adjusted along the length of the wall as 'its similarly which are positioned l and frictionally holds may be desired, or removed without interfering one with the other. v,At the end of each bar 14 is a Weight 24 which is intended to hold the. periphery of the paste disk in contact with the cutting `edge of the cutting disk which is companion thereto So that as each cutter disk revolves in the cutting operation it will contact with and receive a. thin line or film of paste from revolving paste-applying disk or wheel. r The scraper blade '18 of each paste-applying disk may be adjusted as to vtension by means of a set screw 25 which is if necessary threaded in thearm 17 at the end of the i( bar 14 and bears against the scraper blade as shown in Fig. 1. l

From the above description taken in connection with. the accompanying drawing it will be understood thatas the web B travels around the'cutter roll C and in contact with the cutter disks l it is slit by the latter and the paste which has been applied to the cutter disks by the paste-applying disks 16 will in turn be transferred or applied by the cutter disks to the edges of the strips thereby sealing and uniting the cut or severed ends ofthe threads of strands. therbe noted that each paste applying -element may be readily hung upon' and lifted from `its supporting bead without interfer- 1ng with the other elements of the gang, and

that by merely sliding or shifting the shoes the bead the distance be- It will furs rate weight suspended therefrom as is shown in Figs. 1 and 2.

While I have herein shown and described `a Ipreferred embodiment of my invention I wish it to be understood that I do not confine myself to all the precise details of construction herein set 'forth by way of illustration, as modification and variation may be made without departing from the spirit of the invention or exceeding` the scope of the appended claims.

at I claim is:

1. The combination with a support over which a sheet is adapted to travel and a cutter'for slitting the sheet, of a removable, rotating paste-applying disk in. contact with the cutter for applying paste to the latter whereby the paste will be transferred by the cutter to the edges formed in slitting the sheet.

2. The combination with a support for a sheet to be slit into strips, of a rotary cutter for slitting the sheet, and a rotary paste applying member contacting with the cutter for applying paste to the latter.

3. The combination with means for slitting a sheet, including a rotary` cutting disk, of a rotary paste-applying disk contacting with the cutting disk for applying paste to the periphery of the latter, and means for supplying paste to the paste applying disk.

4. The combination with means for slitting a sheet, including a rotary cutting disk, of meanscfor applying paste to the disk, said means comprising a supply tank for the paste, a positioning shoe mounted on the tank, a carrier bar also mounted on the tank and held against lateral movement by the shoe, and a paste-applying member carried by the carrier -bar and extending into the tank and adapted to Contact With'the cutting disk to apply paste to the latter.

5. The combination With means for slitting a sheet, including a rotary cutting disk, of means for applying paste to the cutting disk, said means comprising a supply tank for the paste, a positioning shoe slidably mounted on and frictionally held in position on a Wall of the tank, a slotted bar fitting over and held against lateral movement by the shoe, said bar being mounted to rock on the Wall of the tank, a Weight at one end of the bar, a rotary paste-applying disk mounted adjacent the opposite end of the bar and extending into the tank to receive paste therefrom and adapted to contact with the cutting disk to apply paste thereto, and means for removing surplus paste from the paste-applying disk.

6. The combination with means for slitting a sheet into strips, including a gang of spaced cutters, of means for applying paste to the cutters whereby said paste will be transferred to the edges of the strips formed in the slitting of the sheet, said means comprising a tank for containing the paste, a

lurality of carrier bars mounted to rock on a Wall of the tank independently of each other, said bars being loosely hung on the wall, independently adjustable positioning members slidably mounted on the wall and adapted to confine the bars against lateral movement on the Wall, a paste applying disk carried by each carrier bar and adapted to contact with a companion cutter to apply paste thereto, the paste applying disks depending into the tank, and tension means connected With the carrier bars for holding the paste applying disks in contact with the cutters.

7. The combination with means for slitting a sheet into strips, including a gang of spaced cutting disks, of a paste holding tank mounted adjacent the cutting disks, and a gang of independently adjustable paste applying disks movably mounted on the tank and adapted to project thereinto to receive paste, and means for holding each of said paste applying disks in contact with the periphery of a companion cutting disk to apply paste to the latter whereby said paste will be transferred to the edges of the strips formed in the cutting or slitting of the sheet.

In testimony whereof I have hereunto set my hand.

AARON FREYDBERG. 

